Twisting frame



May 18 1926,.

R. FEARS ET AL TWI STING FRAME Filed Nov. 24, 1924 2 Sheets-Sheet l INVENm iwv/rm 41% 0112; 2..

FIG. 1.

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Application filed November This invention relates to machines for the driving roller in the event of the yarn breaking or running out and an improved construction of clutches for simultaneously stopping the spindle and iiyer.

A cording to this invention each pressing roller is mounted on a pivoted frame and is normally maintained in gear with the driving roller by a weigl'ited arm. Each detector is slidably mounted in a weighted catch lever that is adapted to hold a weighted clutch lever in a position to maintain a clutch member appertaining to a spindle or flyer in its driving position, failure of the yarn releasing a detector which is then actuated by a tappet to disengage the catch lever from the weighted clutch lever whereupon the latter turns and disengages the clutch appertaining to the spindle and flyer and simultaneously lifts the weighted arm to disengage the pressing roller from the driving roller. Two hand operated control levers are provided, one for disengaging the pressing roller and stopping the spindles, and the other for engaging the pressing roiler and starting the spindles.

A feature of the invention consists in providing means whereby the driven clutch member is caused to rotate at or about the speed of the driving clutch member before its teeth are brought into gear with the teeth of the driving clutch member with the resuit that shock or vibration between the teeth is eliminated.

in the accompanying drawings F i g. 1 is a sine elevation of part of atwisting frame constructed in accordance with this invention, and

Fig. 2 is a similar View of the lower part of the machine.

A indicates the yarn, B one of the spindles, C the pressing roller, D the driving roller, and E the detector.

Each pressing roller C is mounted on a pivoted arm 0 and is normally maintained in gear with the driving roller D by aweight 0 or its equivalent on another arm 0 24, 1924-. Serial No. 751,853.

Each detector E is slidably mounted in a weighted catch lever e that is adapted to hold a weighted clutchlever e in a position to maintain a clutch member appertaining to a spindle 13 or to the flyer F in its driving position. For this purpose a crank arm .7) is connected by a rod 6 with an arm that en ages an annular recess in an outer clutch member 23 This clutch member is slidably mounted on an inner clutch member 0* and is toothed" at its lower end to engage teeth on a clutch member Z2 that is rotatably mounted 011 the spindle B and is positively driven by gearing 6*. The driving clutch member 7f is formed with a c0nical rec'ess Z) to receive a conical end 5 on the inner clutch member 6 The latter is slidabiy mounted on the spindle B and is pressed towards the driving clutch member Z) by a spring 6 which encircles a portion of the spindle within the inner clutch memher and exerts pressure against the latter and a clutch collar 6 that is rigidly fixed on the spindle. This clutch collar is formed with one or more recesses 6 to receive one or more prongs 6 on the inner clutch memher. The upper end of the outer clutch member is formed with one or more prongs Z1 to engage one or more recesses Z2 in a flange which extends around the inner clutch member 5 When a detector E falls through breakage or failure of the yarn it is actuated by a tappet e to disengage the catch lever e from the weighted clutch lever e whereupon the latter turns and lifts the clutch teeth on the outer clutch member and the conical surface on the inner clutch member out of gear with the corresponding parts of the driving clutch member 6 As the clutch lever 6 turns, a portion 6 of it strikes a projection c on the weighted arm appertaining to the pressing roller C and moves the latter out of contact with the driving roller D. To restart the spindle the front end or handle e of the weighted clutch lever is depressed thereby causing a curved surface 0 on such lever to travel past a projection e on the catch lever 6 until such projection reengages a catch 6 on the clutch lever. When the latter is depressed in the manner described, the weight 0 appertaining to the pressing roller returns the latter into gear with the driving roller D. When the operating lever b? is lowered the spring Z2 first moves the conical surface 6" of the inner clutch memher into gear with the conical recess Z) in the driving clutch member, with the result that the spindle and the outer clutch member are caused to rotate at or about the speed of the driving clutch member 6 Further movement or the operating lever in the same direction then brings the teeth on the outer clutch member into gear with the teeth on the driving clutch member and as these two parts are prior to this operation rotating at or about the same speed the clutch is brought into gear without shock, noise, or vibration, and a positive drive is then imparted to the spindle. To stop the spindle by hand a handle such as 0 may be provided on the arm 0 which carries the pressing roller C. When the attendant pulls such handle in a direction to disengage the pressing roller from the driving roller the weighted arm 0 is raised until a portion 0 of it engages an abutment c on the weighted catch lever e and turns the latter to disengage the projection 0 thereon from the catch 6 on the weighted clutch lever whereupon the latter falls and disengages the spindle clutch and also retains the pressing roller in its disengaged position.

VVh-at we claim as our invention and desire to secure by Letters Patent in the United States is 1. In a machine for twisting threads and yarns the combination of a driving roller, a pressing roller; a pivoted frame carrying the latter, a weighted arm rigidly connected with the frame, a weighted catch lever, a

detector slidably mounted in the catch lever and maintained in an inoperative position by the yarn, a tappet for engaging the detector when the yarn fails, a weighted clutch lever adapted to engage the catch lever and the weighted arm, a clutch driven spindle provided with a sliding clutch member and an operative connection between the weighted clutch lever and the sliding clutch memher.

2. In a machine for twisting threads and yarns, the combination of a driving roller, a pressing roller, a weighted arm rigidly connected with the frame, a weightedcatch lever, a detector slidably mounted in the catch lever and maintained in an inoperative position by the yarn, a tappet for engaging. the detector when the yarn fails, a weighted clutch lever adapted to engage the catch lever and the weighted arm, a clutch driven spindle provided with a sliding clutch member, an operative connection between the weighted clutch lever and the sliding clutch member, a hand operated control lever for disengaging the pressing roller from the driving roller and the sliding clutch member from the spindle driving clutch member and a hand operated control lever for engaging the pressingroller with the driving roller and the sliding clutch member with the spindle driving clutch men'iber. 1 In testimony whereof we aliix our signattures. i ROLAND PEAR-S. WALTER SEFTON SUFFERN. 

